Pipe-tapping means.



.-, 0. W. METG ALF. PIPE TAPFING MEANS.

APPLICATION FILED JUNE 1-1I 1910.

1,016,026. I Patented Jan. 30,1912.

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ZM f By Qflmm ATTORNEY @LUMIIA PLANDGIAPN C0. WAIRIINGTON, D- C CHARLESW. METCALF, OF SAN DIEGO, CALIFORNIA.

PIPE-TAPPING MEANS.

Specification of Letters Patent.

Patented Jan. 30, 1912.

Application filed June 11, 1910. Serial No. 566,374.

To all whom it may concern Be it known that I, CHARLES W. MET- oALr, acitizen of the United States, residing at San Diego, in the county ofSan Diego and State of California, have invented certain new and usefulImprovements in Pipe-Tapping Means, of which the following is aspecification.

My invention relates to devices for regulating and stopping the flow ofliquids and gases under pressure in pipes, and is more particularlyadapted to the controlling of the flow of oil, gas and Artesian wells,and the objects of my invention are, first, to provide a device fortapping pipes under pres sure therein, to reduce the pressure in themain pipes; second, to provide a means for plugging said main pipe andstop the flow therefrom of its contents; third, to provide a cap forstopping the flow from said main pipe of its contents and fourth, toprovide means for distributing the contents of said main pipe. I attainthese objects by the device illustrated in the accompanying drawings, inwhich Figure 1 is a sectional view of a pipe and of a portion of mydevice for tapping and inserting relief pipes therein, Fig. 2 is a sideelevational view of the device for capping said main pipe after thepressure has been reduced, Fig. 3 is a top or end view of a main pipeshowing my device in position for tapping it, Fig. 4 is an elevationalView of a main pipe showing relief pipes inserted at right angles, Fig.5 is the same view showing relief pipes inserted at other than rightangles and at various positions around said main pipe, Fig. 6 is a sideelevational view of my device for plugging the main pipes, and Fig. 7 isan elevational view of a por tion of relief pipe 0 showing the cuttingmeans thereon.

Similar characters of reference refer to similar parts throughout theseveral views.

a represents the main pipe which is provided with a plurality of clamps,which are made in two sections m and n and are held together in positionby bolts h. The portion 91 of said clamps are reinforced as shown, andprovided with a threaded hole f, and the threaded end 6 of relief pipe 0is screwed into said threaded hole f in portion n. Reli'ef pipe 0 isalso provided with a tempered steel end (Z adapted for cutting throughthe walls of main pipe a when relief pipe 0 is screwed through thethreaded hole f. On

the inner side of said relief pipe is provided a spring thrust rod Z,shaped as shown, and adapted to thrust the part of the pipe at which iscut away by cutter cl on relief pipe 0 and it is so shaped that it willnot catch on the inner edge of said relief pipe 0. This thrust rod Z isheld in its relative position by frictional contact with stuffing box 0.Pipe 0 is provided adjacent to its threaded portion with a hexagonalreinforcement 0 shrunk thereon and adapted to a wrench for turning saidrelief pipe. Pipe 0 is also pro vided with a gate valve 9, and on itsextended end with a stufling box 0.

As many taps as are necessary to control the flow of the contents ofpipe at are made in said main pipe. The service pipe is preferably leftin position as shown in Fig. 1 so that the longer portion will guide thecontents into the relief pipe. After a tap is made the thrust rod Z isdrawn out through the stuffing box 0 until it is past the valve 9, whenthe said valve is closed, and the stufling box and thrust rod areremoved therefrom, and a distributing pipe is attached to said reliefpipe 0 and a portion of the contents of pipe a are permitted to flowthrough the relief pipe 0 by opening valve 9. When sufficient reliefpipes 0 have been introduced lnto pipe a to reduce the pressure therein,the plug shown in Fig. 6 which is a simple tapered plug may be insertedinto pipe at, thus causing all the flow of the contents of pipe at topass through relief pipes c. Instead of using the plug'shown in Fig. 6,the cap shown in Fig. 2 can be placed on pipe a and its contents beconveyed through distrlbutmg pipes 70 to where desired, thus providingadditional distributing pipes.

Having thus described my invention, what I claim asnew and desire tosecure by Letters Patent is i 1. A device of the character described,comprising a clamp provided with a thread ed hole and adapted to beplaced around a main pipe, a relief pipe provided with a cutting endthreaded to correspond with the threaded hole in said clamp and adaptedto be screwed into said threaded hole and thence through the wall ofsaid main pipe, and a valve means for regulating the flow of liquid fromsaid main pipe through the opening therein, all substantially as setforth.

2. A device of the character described comprising a clamp provided witha threaded hole, a relief pipe equipped with it outmy hand in thepresence of two subscribing ting end adapted to screw in said threadedWitnesses.

hole, a valve in said relief pipe, and aspring l l thrust rod extendingthrough said valve in CHARLES METCALF' said relief pipe, approximatelyto its end, Vitnesses: all substantially as set forth. CLAUD T.DAVENPORT,

In Witness whereof, I have hereunto set BENJIMAN F. BOWMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

